Similar to onions (below) except “an occasional low dose [of garlic], such as what might be found in pet foods or treats, likely will not cause a problem.” It’s recommended that you do NOT give your pets large quantities of garlic.

Macadamia Nuts

Contains toxins which can cause weakness, depression, vomiting, tremors and hyperthermia in dogs.

Moldy or Spoiled Foods

Could contain multiple toxins

Onions, Onion powder, Chives

Contains sulfoxides and disulfides which can damage red blood cells, resulting in anemia.

Raisins and Grapes

Contains toxins which can damage kidneys, cause kidney failure and lead to death.Salt

Raw or Undercooked Meat

Despite the popularity of raw diets for dogs, the ASCPA has added this to their list saying that it “can contain bacteria such as S almonella and E. coli that can be harmful to pets.”

This common artifical sweetener is very dangerous to dogs and can cause a sudden drop in blood sugar, leading to liver failure. Signs of ingestion include vomiting, loss of coordination, lethargy and seizures.

Like people, some dogs can be lactose intolerant, resulting in diarrhea.

Mushrooms

Depending on the mushroom, toxic effects include damage to the liver, heart, or kidneys causing death.

Turkey Skin and other rich, fatty foods like Bacon, Sausages, etc.

The high fat content in turkey skin can cause acute Pancreatitis in dogs.

Raw Salmon

Those feeding their dogs a raw diet, please avoid raw salmon which can contain a parasite that causes an illness (SPD) with a 90% mortality rate.

Raw Eggs

Best to avoid since it can cause a depletion of biotin and be contaminated with salmonella.

Sugar

Bad for teeth and could contribute to the onset of Diabetes.

Tomatoes/Tomato Plants

Contains toxins known to cause dilated pupils, tremors and irregular heartbeat. The leaves and stems of tomato plants are the most toxic followed by unripe (green) tomatoes and ripe (red) tomatoes.

Walnuts & most nuts

Walnuts are poisonous to dogs. Many nuts are not good for dogs in general; their high phosporus content is said to possibly lead to bladder stones.

Cocoa Mulch (used outdoors as a mulch)

Although mulch isn’t food, there is one type that is tempting enough for dogs to eat. Some dogs are very attracted to cocoa mulch and will eat it. The coca bean shells can contain from 0.2% to 3% theobromine (the toxin ) as compaired to 1-4% in unprocessed beans and can be quite dangerous.